Die.



PATENTED NOV. 22, 1904.

G. KBPPLER.

DIE.

APPLIOATIGN FILED AUG. 26. 1903.

N0 MODEL.

N VE N 70/? eozyejfe zplez" A TTOFNE YS WITNESSES. 6 0% cm TE STATESPatented November 22, 1904-.

GEORGE KEPPLER, OF NETV YORK, N. Y.

DIE.

SPECIFICATION forming part of Letters Patent No. '77 5,826, datedNovember 22, 1904.

Application filed August 26,1908: Serial No. 170,825. (No model.)

1'0 6b whom it may concern.- I

Be it known that I, GEORGE KEPPLER, a subject of the German Emperor, anda resident of the city of New York, borough of Manhattan, in the countyand State of New York, have invented a new and Improved Die, of whichthe following is a full, clear, and exact description.

This invention relates to an apparatus for stamping articles from fiatmetal stock. It is especially intended for stamping in high reliefimages and the like on metal plates or disks for jewelry or otherpurposes.

The invention comprises a die proper shaped according to the image whichis to be produced and having at each side a guide, so as to hold a slidewhich fits over the metal plate constituting the work and holds theedges thereof, the slide having an opening therein, through which theplunger is movable. WVhen the device is used for stamping up images intohigh relief, as metal disks, a slight cavity is formed around the edgesof the die proper, this cavity being of a thickness about equal to thatof the disk, and the disk is laid into this cavity face downward overthe sunken portion of the die proper. The slide is then placed inposition with its opening directly over the center of the disk, thisslide serving the twofold purpose of holding the disk and protecting theedges thereof during the stam ping operation, which operation isconfined to the center of the disk, and also of centering the plungerwith respect to the die. l/Vhen the slide and disk constituting the workhave been placed in position, the plunger should be brought down throughthe opening in the slide, and proper pressure being applied the diskwill be stamped according to the form of the die.

This specification is an exact description of one example of theinvention, While the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a perspective view of the invention in use. Fig. 2 is avertical section thereof, and Fig. 3 is a View giving an example of thework produced by the instrument.

The apparatus comprises a body or anvil (7/, in the upper side of whichis formed the die proper, a. Surrounding the die proper is a cavity awhich is of a depth just equal to the thickness of the plate or diskconstituting the work from which the product of the device is to beformed, and at each side of the die and cavity is arranged an undercutor overhanging guide a.

1) indicates the slide or top member, which has beveled edges to matchthe guides of and which is formed with an opening I) therein, thisopening lying over the disk when the parts are in operation, as shown inFig. 2.

0 indicates the plunger, which has a reduced portion 0, corresponding tothe openingZ), and below this is a knob 0, which is given in the roughthe form of the die a.

In the use of the invention, assuming that a metal disk is to be used toproduce the article desired, the die a should be out according to thefigure desired and then the disk placed face downward in the cavity (4after which the slide Z) should be positioned between the guides (15 andthe plunger 0 brought down with suitable pressure, the reduced portions0 in such case entering the opening Z) and the roughened extremity 0striking the back of the disk and forcing the disk downward into thedie, so as to produce in high relief the image thereof.

Fig. 3 shows, by way of example, the outer edges of the disk in theoriginal plane form; butthe middle of the disk is pressed out into highrelief and the appearance given that the said middle of the disk hasbeen broken through the disk, this of course being all produced by theform of the die proper. l.)uring the pressing operation the slide 6serves to hold and protect the edge portions of the disk, insuring theeffect described.

Various changes in the form, proportions, and minor details of myinvention may be resorted to at will without departing from the spiritand scope thereof. Hence I consider myself entitled to all suchvariations as may lie within the intent of my claims.

lie over the die proper and having therein an orifice of less diameterthan that of the said cavity, and a plunger movable through the orificein the slide.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

GEORGE KEPPLER.

Witnesses:

IsAAo B. OWENS, EVERARD BOLTON MARsHALL.

